hep-th papers | Gist.Science

Hep-Th, or high-energy theoretical physics, explores the fundamental building blocks of our universe and the forces that govern them. Researchers in this field use complex mathematics to understand everything from subatomic particles to the behavior of black holes, often pushing the boundaries of what we know about space and time.

At Gist.Science, we monitor the arXiv repository to ensure you stay ahead of the curve in this rapidly evolving discipline. For every new preprint uploaded to arXiv under this category, our team generates both accessible plain-language overviews and detailed technical summaries, making cutting-edge research understandable regardless of your background.

Below are the latest papers in high-energy theoretical physics, curated to help you navigate the most significant recent discoveries.

New recursive construction for tree NLSM and SG amplitudes, and new understanding of enhanced Adler zero

This paper proposes a new bottom-up recursive method to construct tree amplitudes for non-linear sigma model and special Galileon theories by extending them to off-shell configurations, thereby deriving their exact universal soft behaviors and providing a novel Lagrangian-free understanding of the enhanced Adler zero as a consequence of soft behaviors vanishing faster than naive power counting.

Kang Zhou2026-05-05⚛️ hep-th

Recursive construction for expansions of tree Yang-Mills amplitudes from soft theorem

This paper introduces a novel, bottom-up recursive method that expands tree-level Yang-Mills amplitudes into Yang-Mills-scalar and Bi-adjoint-scalar amplitudes using only intrinsic soft theorems to preserve manifest gauge invariance and derive BCJ numerators.

Chang Hu, Kang Zhou2026-05-05⚛️ hep-th

Multi-trace YMS amplitudes from soft behavior

This paper derives the tree-level multi-trace Yang-Mills-scalar amplitude expansion formula by first establishing the double-trace pure scalar amplitude and then systematically incorporating additional scalars and gluons through double-soft and single-soft behavior constraints.

Yi-Jian Du, Kang Zhou2026-05-05⚛️ hep-th

Towards tree Yang-Mills and Yang-Mills-scalar amplitudes with higher-derivative interactions

This paper extends a soft-behavior-based approach to construct tree-level Yang-Mills and Yang-Mills-scalar amplitudes with higher-derivative $F^3$ and $F^4$ interactions, presenting them as universal expansions and conjecturing a compact general formula for generating higher-mass-dimension amplitudes from ordinary ones.

Kang Zhou, Chang Hu2026-05-05⚛️ hep-th

Constructing tree amplitudes of scalar EFT from double soft theorem

This paper proposes a novel method based on the double soft theorem to construct tree-level scalar amplitudes for theories like the non-linear sigma model and its higher-derivative extensions, uniquely determining the double soft factor during the process to overcome the limitations of the traditional Adler zero.

Kang Zhou2026-05-05⚛️ hep-th

On soft factors and transmutation operators

Using transformation operators proposed by Cheung, Shen, and Wen, this paper reconstructs known universal soft factors for Yang-Mills and gravitational amplitudes and proves that no such universal soft factors exist at higher orders.

Fang-Stars Wei, Kang Zhou2026-05-05⚛️ hep-th

Understanding zeros and splittings of ordered tree amplitudes via Feynman diagrams

This paper utilizes Feynman diagrams to propose a unified framework for understanding hidden zeros and novel splittings in ordered tree-level amplitudes of $\text{Tr}(\phi^3)$ , Yang-Mills, and non-linear sigma model theories by identifying three universal cutting methods that decompose full amplitudes into distinct pieces.

Kang Zhou2026-05-05⚛️ hep-th

Topological entanglement entropy meets holographic entropy inequalities

This contribution elucidates the mechanism behind subtraction schemes for topological entanglement entropy, derives necessary conditions for arbitrary subregion probes to detect topological order, and demonstrates that holographic entropy inequalities hold for the ground states of gapped two-dimensional topologically ordered systems.

Joydeep Naskar, Sai Satyam Samal2026-05-05⚛️ hep-th

Note on hidden zeros and expansions of tree-level amplitudes

This paper derives and interprets hidden zeros in tree-level amplitudes across various theories by utilizing universal expansions to bi-adjoint scalar theory, attributing these zeros to the scalar theory's properties while detailing the mechanism that resolves potential propagator divergences in unordered amplitudes like gravity.

Hao Huang, Ye Yang, Kang Zhou2026-05-05⚛️ hep-th

Quantization of massive fermions in vacuum and external fields

This paper presents the quantization of massive Majorana neutrinos in background matter using Weyl spinors and propagator construction, alongside a Hamiltonian formalism analysis of both these neutrinos and classical Dirac particles in vacuum.

Maxim Dvornikov2026-05-05⚛️ hep-ph

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